textproduct: Rapid City

KEY MESSAGES

-Mild and dry into next week

-Fog possible tonight across the eastern third to half

DISCUSSION

(This Afternoon Through Wednesday) Issued at 1102 AM MST Thu Nov 5 2026

Mean western NOAM ridging will support mild and dry weather as Pac flow continues aloft. Weak/skirting impulses will support cool fronts at times to knock temps down a few degrees. Temps will be above normal in the period with the warmest days being this weekend, particularity Sunday when highs will average 20 degrees above normal. The only expected impact in the period attm is for areas of fog toward central SD tonight. Moist BL with ESE upslope flow will support low clouds and fog later tonight there with fog and low clouds possibly shifting as far west as K2WX to KRAP. Any fog will quickly burn off Friday morning with temps recovering nicely by afternoon. Compact upper impulse will move through southern Canada on Friday and the the only impact from this system will be breezy winds across NW SD Sat. Another stronger trough will take a similar path across southern Canada on Sunday, supporting cool front into the area. This will knock temps back down into the 50s and 60s for Monday. Otherwise, no other impacts expected. This pattern looks to continue beyond the forecast period into the following weekend.

AVIATION

(For the 00Z TAFS Through 00Z Friday Evening) Issued At 444 PM MST Thu Nov 5 2026

IFR CIGS now over eastern SD will slide westward tonight and Fri morning, moving into portions of the western SD plains. IFR conditions will remain until clouds gradually erode through late Fri morning...possibly early afternoon. IFR VSBY due to fog are also possible with these low clouds, which should stay east of the Black Hills. Otherwise VFR conditions are expected through the forecast period for far western SD/Black Hills through NE WY.

UNR WATCHES/WARNINGS/ADVISORIES

SD...None. WY...None.